package org.apache.maven.project;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.util.ArrayList;
import java.util.Collections;
import java.util.IdentityHashMap;
import java.util.List;
import java.util.Map;

import org.eclipse.aether.graph.Dependency;
import org.eclipse.aether.graph.DependencyNode;

/**
 * @author Benjamin Bentmann
 */
class DefaultDependencyResolutionResult implements DependencyResolutionResult {

  private DependencyNode root;

  private List<Dependency> dependencies = new ArrayList<Dependency>();

  private List<Dependency> resolvedDependencies = new ArrayList<Dependency>();

  private List<Dependency> unresolvedDependencies = new ArrayList<Dependency>();

  private List<Exception> collectionErrors = new ArrayList<Exception>();

  private Map<Dependency, List<Exception>> resolutionErrors = new IdentityHashMap<Dependency, List<Exception>>();

  public DependencyNode getDependencyGraph() {
    return root;
  }

  public void setDependencyGraph(DependencyNode root) {
    this.root = root;
  }

  public List<Dependency> getDependencies() {
    return dependencies;
  }

  public List<Dependency> getResolvedDependencies() {
    return resolvedDependencies;
  }

  public void addResolvedDependency(Dependency dependency) {
    dependencies.add(dependency);
    resolvedDependencies.add(dependency);
  }

  public List<Dependency> getUnresolvedDependencies() {
    return unresolvedDependencies;
  }

  public List<Exception> getCollectionErrors() {
    return collectionErrors;
  }

  public void setCollectionErrors(List<Exception> exceptions) {
    if (exceptions != null) {
      this.collectionErrors = exceptions;
    } else {
      this.collectionErrors = new ArrayList<Exception>();
    }
  }

  public List<Exception> getResolutionErrors(Dependency dependency) {
    List<Exception> errors = resolutionErrors.get(dependency);
    return (errors != null) ? errors : Collections.<Exception> emptyList();
  }

  public void setResolutionErrors(Dependency dependency, List<Exception> errors) {
    dependencies.add(dependency);
    unresolvedDependencies.add(dependency);
    resolutionErrors.put(dependency, errors);
  }

}
